package org.lanqiao.service;

import org.lanqiao.entity.User;

import java.util.List;

public interface UserService {
    public boolean addUser(User user);

    public boolean updUser(User user);

    public boolean delUser(Integer id);

    public List<User> findAll();

    public User findById(Integer id);

    public boolean isExistById(Integer id);
}
